commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2014 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 7 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 8 | #include "SkTwoPointConicalGradient_gpu.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 9 | |
| 10 | #include "SkTwoPointConicalGradient.h" |
| 11 | |
commit-bot@chromium.org | ef93d29 | 2014-04-10 15:37:52 +0000 | [diff] [blame] | 12 | #if SK_SUPPORT_GPU |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 13 | #include "GrCoordTransform.h" |
| 14 | #include "GrInvariantOutput.h" |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 15 | #include "GrPaint.h" |
egdaniel | 2d721d3 | 2015-11-11 13:06:05 -0800 | [diff] [blame] | 16 | #include "glsl/GrGLSLFragmentShaderBuilder.h" |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 17 | #include "glsl/GrGLSLProgramDataManager.h" |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 18 | #include "glsl/GrGLSLUniformHandler.h" |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 19 | // For brevity |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 20 | typedef GrGLSLProgramDataManager::UniformHandle UniformHandle; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 21 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 22 | static const SkScalar kErrorTol = 0.00001f; |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 23 | static const SkScalar kEdgeErrorTol = 5.f * kErrorTol; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 24 | |
| 25 | /** |
| 26 | * We have three general cases for 2pt conical gradients. First we always assume that |
| 27 | * the start radius <= end radius. Our first case (kInside_) is when the start circle |
| 28 | * is completely enclosed by the end circle. The second case (kOutside_) is the case |
| 29 | * when the start circle is either completely outside the end circle or the circles |
| 30 | * overlap. The final case (kEdge_) is when the start circle is inside the end one, |
| 31 | * but the two are just barely touching at 1 point along their edges. |
| 32 | */ |
| 33 | enum ConicalType { |
| 34 | kInside_ConicalType, |
| 35 | kOutside_ConicalType, |
| 36 | kEdge_ConicalType, |
| 37 | }; |
| 38 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 39 | ////////////////////////////////////////////////////////////////////////////// |
| 40 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 41 | static void set_matrix_edge_conical(const SkTwoPointConicalGradient& shader, |
| 42 | SkMatrix* invLMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 43 | // Inverse of the current local matrix is passed in then, |
| 44 | // translate to center1, rotate so center2 is on x axis. |
| 45 | const SkPoint& center1 = shader.getStartCenter(); |
| 46 | const SkPoint& center2 = shader.getEndCenter(); |
| 47 | |
| 48 | invLMatrix->postTranslate(-center1.fX, -center1.fY); |
| 49 | |
| 50 | SkPoint diff = center2 - center1; |
| 51 | SkScalar diffLen = diff.length(); |
| 52 | if (0 != diffLen) { |
| 53 | SkScalar invDiffLen = SkScalarInvert(diffLen); |
| 54 | SkMatrix rot; |
| 55 | rot.setSinCos(-SkScalarMul(invDiffLen, diff.fY), |
| 56 | SkScalarMul(invDiffLen, diff.fX)); |
| 57 | invLMatrix->postConcat(rot); |
| 58 | } |
| 59 | } |
| 60 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 61 | class Edge2PtConicalEffect : public GrGradientEffect { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 62 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 63 | class GLSLEdge2PtConicalProcessor; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 64 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 65 | static sk_sp<GrFragmentProcessor> Make(GrContext* ctx, |
| 66 | const SkTwoPointConicalGradient& shader, |
| 67 | const SkMatrix& matrix, |
| 68 | SkShader::TileMode tm) { |
| 69 | return sk_sp<GrFragmentProcessor>(new Edge2PtConicalEffect(ctx, shader, matrix, tm)); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 70 | } |
| 71 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 72 | virtual ~Edge2PtConicalEffect() {} |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 73 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 74 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 75 | return "Two-Point Conical Gradient Edge Touching"; |
| 76 | } |
| 77 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 78 | // The radial gradient parameters can collapse to a linear (instead of quadratic) equation. |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 79 | SkScalar center() const { return fCenterX1; } |
| 80 | SkScalar diffRadius() const { return fDiffRadius; } |
| 81 | SkScalar radius() const { return fRadius0; } |
| 82 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 83 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 84 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 85 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 86 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 87 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 88 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 89 | const Edge2PtConicalEffect& s = sBase.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 90 | return (INHERITED::onIsEqual(sBase) && |
| 91 | this->fCenterX1 == s.fCenterX1 && |
| 92 | this->fRadius0 == s.fRadius0 && |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 93 | this->fDiffRadius == s.fDiffRadius); |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 94 | } |
| 95 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 96 | Edge2PtConicalEffect(GrContext* ctx, |
| 97 | const SkTwoPointConicalGradient& shader, |
| 98 | const SkMatrix& matrix, |
| 99 | SkShader::TileMode tm) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 100 | : INHERITED(ctx, shader, matrix, tm), |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 101 | fCenterX1(shader.getCenterX1()), |
| 102 | fRadius0(shader.getStartRadius()), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 103 | fDiffRadius(shader.getDiffRadius()){ |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 104 | this->initClassID<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 105 | // We should only be calling this shader if we are degenerate case with touching circles |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 106 | // When deciding if we are in edge case, we scaled by the end radius for cases when the |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 107 | // start radius was close to zero, otherwise we scaled by the start radius. In addition |
| 108 | // Our test for the edge case in set_matrix_circle_conical has a higher tolerance so we |
| 109 | // need the sqrt value below |
| 110 | SkASSERT(SkScalarAbs(SkScalarAbs(fDiffRadius) - fCenterX1) < |
| 111 | (fRadius0 < kErrorTol ? shader.getEndRadius() * kEdgeErrorTol : |
| 112 | fRadius0 * sqrt(kEdgeErrorTol))); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 113 | |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 114 | // We pass the linear part of the quadratic as a varying. |
| 115 | // float b = -2.0 * (fCenterX1 * x + fRadius0 * fDiffRadius * z) |
| 116 | fBTransform = this->getCoordTransform(); |
| 117 | SkMatrix& bMatrix = *fBTransform.accessMatrix(); |
| 118 | SkScalar r0dr = SkScalarMul(fRadius0, fDiffRadius); |
| 119 | bMatrix[SkMatrix::kMScaleX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMScaleX]) + |
| 120 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp0])); |
| 121 | bMatrix[SkMatrix::kMSkewX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMSkewX]) + |
| 122 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp1])); |
| 123 | bMatrix[SkMatrix::kMTransX] = -2 * (SkScalarMul(fCenterX1, bMatrix[SkMatrix::kMTransX]) + |
| 124 | SkScalarMul(r0dr, bMatrix[SkMatrix::kMPersp2])); |
| 125 | this->addCoordTransform(&fBTransform); |
| 126 | } |
| 127 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 128 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 129 | |
| 130 | // @{ |
| 131 | // Cache of values - these can change arbitrarily, EXCEPT |
| 132 | // we shouldn't change between degenerate and non-degenerate?! |
| 133 | |
| 134 | GrCoordTransform fBTransform; |
| 135 | SkScalar fCenterX1; |
| 136 | SkScalar fRadius0; |
| 137 | SkScalar fDiffRadius; |
| 138 | |
| 139 | // @} |
| 140 | |
| 141 | typedef GrGradientEffect INHERITED; |
| 142 | }; |
| 143 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 144 | class Edge2PtConicalEffect::GLSLEdge2PtConicalProcessor : public GrGradientEffect::GLSLProcessor { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 145 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 146 | GLSLEdge2PtConicalProcessor(const GrProcessor&); |
| 147 | virtual ~GLSLEdge2PtConicalProcessor() { } |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 148 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 149 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 150 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 151 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 152 | |
| 153 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 154 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 155 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 156 | UniformHandle fParamUni; |
| 157 | |
| 158 | const char* fVSVaryingName; |
| 159 | const char* fFSVaryingName; |
| 160 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 161 | // @{ |
| 162 | /// Values last uploaded as uniforms |
| 163 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 164 | SkScalar fCachedRadius; |
| 165 | SkScalar fCachedDiffRadius; |
| 166 | |
| 167 | // @} |
| 168 | |
| 169 | private: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 170 | typedef GrGradientEffect::GLSLProcessor INHERITED; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 171 | |
| 172 | }; |
| 173 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 174 | void Edge2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 175 | GrProcessorKeyBuilder* b) const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 176 | Edge2PtConicalEffect::GLSLEdge2PtConicalProcessor::GenKey(*this, caps, b); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 177 | } |
| 178 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 179 | GrGLSLFragmentProcessor* Edge2PtConicalEffect::onCreateGLSLInstance() const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 180 | return new Edge2PtConicalEffect::GLSLEdge2PtConicalProcessor(*this); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 181 | } |
skia.committer@gmail.com | 221b911 | 2014-04-04 03:04:32 +0000 | [diff] [blame] | 182 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 183 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Edge2PtConicalEffect); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 184 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 185 | /* |
| 186 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 187 | */ |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 188 | sk_sp<GrFragmentProcessor> Edge2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 189 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 190 | SkScalar radius1 = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 191 | SkPoint center2; |
| 192 | SkScalar radius2; |
| 193 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 194 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 195 | // If the circles are identical the factory will give us an empty shader. |
| 196 | // This will happen if we pick identical centers |
| 197 | } while (center1 == center2); |
| 198 | |
| 199 | // Below makes sure that circle one is contained within circle two |
| 200 | // and both circles are touching on an edge |
| 201 | SkPoint diff = center2 - center1; |
| 202 | SkScalar diffLen = diff.length(); |
| 203 | radius2 = radius1 + diffLen; |
| 204 | |
| 205 | SkColor colors[kMaxRandomGradientColors]; |
| 206 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 207 | SkScalar* stops = stopsArray; |
| 208 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 209 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 210 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 211 | colors, stops, colorCount, tm); |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 212 | SkMatrix viewMatrix = GrTest::TestMatrix(d->fRandom); |
| 213 | sk_sp<GrFragmentProcessor> fp = shader->asFragmentProcessor(SkShader::AsFPArgs( |
brianosman | 1638c0d | 2016-07-25 05:12:53 -0700 | [diff] [blame] | 214 | d->fContext, &viewMatrix, NULL, kNone_SkFilterQuality, nullptr, |
| 215 | SkSourceGammaTreatment::kRespect)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 216 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 217 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 218 | } |
| 219 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 220 | Edge2PtConicalEffect::GLSLEdge2PtConicalProcessor::GLSLEdge2PtConicalProcessor(const GrProcessor&) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 221 | : fVSVaryingName(nullptr) |
| 222 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 223 | , fCachedRadius(-SK_ScalarMax) |
| 224 | , fCachedDiffRadius(-SK_ScalarMax) {} |
| 225 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 226 | void Edge2PtConicalEffect::GLSLEdge2PtConicalProcessor::emitCode(EmitArgs& args) { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 227 | const Edge2PtConicalEffect& ge = args.fFp.cast<Edge2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 228 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 229 | this->emitUniforms(uniformHandler, ge); |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 230 | fParamUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
| 231 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 232 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 233 | |
| 234 | SkString cName("c"); |
| 235 | SkString tName("t"); |
| 236 | SkString p0; // start radius |
| 237 | SkString p1; // start radius squared |
| 238 | SkString p2; // difference in radii (r1 - r0) |
| 239 | |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 240 | |
| 241 | p0.appendf("%s.x", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
| 242 | p1.appendf("%s.y", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
| 243 | p2.appendf("%s.z", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 244 | |
| 245 | // We interpolate the linear component in coords[1]. |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 246 | SkASSERT(args.fCoords[0].getType() == args.fCoords[1].getType()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 247 | const char* coords2D; |
| 248 | SkString bVar; |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 249 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 250 | if (kVec3f_GrSLType == args.fCoords[0].getType()) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 251 | fragBuilder->codeAppendf("\tvec3 interpolants = vec3(%s.xy / %s.z, %s.x / %s.z);\n", |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 252 | args.fCoords[0].c_str(), args.fCoords[0].c_str(), |
| 253 | args.fCoords[1].c_str(), args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 254 | coords2D = "interpolants.xy"; |
| 255 | bVar = "interpolants.z"; |
| 256 | } else { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 257 | coords2D = args.fCoords[0].c_str(); |
| 258 | bVar.printf("%s.x", args.fCoords[1].c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 259 | } |
| 260 | |
| 261 | // output will default to transparent black (we simply won't write anything |
| 262 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 263 | fragBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 264 | |
| 265 | // c = (x^2)+(y^2) - params[1] |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 266 | fragBuilder->codeAppendf("\tfloat %s = dot(%s, %s) - %s;\n", |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 267 | cName.c_str(), coords2D, coords2D, p1.c_str()); |
| 268 | |
| 269 | // linear case: t = -c/b |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 270 | fragBuilder->codeAppendf("\tfloat %s = -(%s / %s);\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 271 | cName.c_str(), bVar.c_str()); |
| 272 | |
| 273 | // if r(t) > 0, then t will be the x coordinate |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 274 | fragBuilder->codeAppendf("\tif (%s * %s + %s > 0.0) {\n", tName.c_str(), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 275 | p2.c_str(), p0.c_str()); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 276 | fragBuilder->codeAppend("\t"); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 277 | this->emitColor(fragBuilder, |
| 278 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 279 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 280 | ge, |
| 281 | tName.c_str(), |
| 282 | args.fOutputColor, |
| 283 | args.fInputColor, |
cdalton | 3f6f76f | 2016-04-11 12:18:09 -0700 | [diff] [blame] | 284 | args.fTexSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 285 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 286 | } |
| 287 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 288 | void Edge2PtConicalEffect::GLSLEdge2PtConicalProcessor::onSetData( |
| 289 | const GrGLSLProgramDataManager& pdman, |
| 290 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 291 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 292 | const Edge2PtConicalEffect& data = processor.cast<Edge2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 293 | SkScalar radius0 = data.radius(); |
| 294 | SkScalar diffRadius = data.diffRadius(); |
| 295 | |
| 296 | if (fCachedRadius != radius0 || |
| 297 | fCachedDiffRadius != diffRadius) { |
| 298 | |
halcanary | 9d524f2 | 2016-03-29 09:03:52 -0700 | [diff] [blame] | 299 | pdman.set3f(fParamUni, SkScalarToFloat(radius0), |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 300 | SkScalarToFloat(SkScalarMul(radius0, radius0)), SkScalarToFloat(diffRadius)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 301 | fCachedRadius = radius0; |
| 302 | fCachedDiffRadius = diffRadius; |
| 303 | } |
| 304 | } |
| 305 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 306 | void Edge2PtConicalEffect::GLSLEdge2PtConicalProcessor::GenKey(const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 307 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 308 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | ////////////////////////////////////////////////////////////////////////////// |
| 312 | // Focal Conical Gradients |
| 313 | ////////////////////////////////////////////////////////////////////////////// |
| 314 | |
| 315 | static ConicalType set_matrix_focal_conical(const SkTwoPointConicalGradient& shader, |
| 316 | SkMatrix* invLMatrix, SkScalar* focalX) { |
| 317 | // Inverse of the current local matrix is passed in then, |
| 318 | // translate, scale, and rotate such that endCircle is unit circle on x-axis, |
| 319 | // and focal point is at the origin. |
| 320 | ConicalType conicalType; |
| 321 | const SkPoint& focal = shader.getStartCenter(); |
| 322 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 323 | SkScalar radius = shader.getEndRadius(); |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 324 | SkScalar invRadius = 1.f / radius; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 325 | |
| 326 | SkMatrix matrix; |
| 327 | |
| 328 | matrix.setTranslate(-centerEnd.fX, -centerEnd.fY); |
| 329 | matrix.postScale(invRadius, invRadius); |
| 330 | |
| 331 | SkPoint focalTrans; |
| 332 | matrix.mapPoints(&focalTrans, &focal, 1); |
| 333 | *focalX = focalTrans.length(); |
| 334 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 335 | if (0.f != *focalX) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 336 | SkScalar invFocalX = SkScalarInvert(*focalX); |
| 337 | SkMatrix rot; |
| 338 | rot.setSinCos(-SkScalarMul(invFocalX, focalTrans.fY), |
| 339 | SkScalarMul(invFocalX, focalTrans.fX)); |
| 340 | matrix.postConcat(rot); |
| 341 | } |
| 342 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 343 | matrix.postTranslate(-(*focalX), 0.f); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 344 | |
| 345 | // If the focal point is touching the edge of the circle it will |
| 346 | // cause a degenerate case that must be handled separately |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 347 | // kEdgeErrorTol = 5 * kErrorTol was picked after manual testing the |
| 348 | // stability trade off versus the linear approx used in the Edge Shader |
| 349 | if (SkScalarAbs(1.f - (*focalX)) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 350 | return kEdge_ConicalType; |
| 351 | } |
| 352 | |
| 353 | // Scale factor 1 / (1 - focalX * focalX) |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 354 | SkScalar oneMinusF2 = 1.f - SkScalarMul(*focalX, *focalX); |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 355 | SkScalar s = SkScalarInvert(oneMinusF2); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 356 | |
| 357 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 358 | if (s >= 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 359 | conicalType = kInside_ConicalType; |
| 360 | matrix.postScale(s, s * SkScalarSqrt(oneMinusF2)); |
| 361 | } else { |
| 362 | conicalType = kOutside_ConicalType; |
| 363 | matrix.postScale(s, s); |
| 364 | } |
| 365 | |
| 366 | invLMatrix->postConcat(matrix); |
| 367 | |
| 368 | return conicalType; |
| 369 | } |
| 370 | |
| 371 | ////////////////////////////////////////////////////////////////////////////// |
| 372 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 373 | class FocalOutside2PtConicalEffect : public GrGradientEffect { |
| 374 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 375 | class GLSLFocalOutside2PtConicalProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 376 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 377 | static sk_sp<GrFragmentProcessor> Make(GrContext* ctx, |
| 378 | const SkTwoPointConicalGradient& shader, |
| 379 | const SkMatrix& matrix, |
| 380 | SkShader::TileMode tm, |
| 381 | SkScalar focalX) { |
| 382 | return sk_sp<GrFragmentProcessor>( |
| 383 | new FocalOutside2PtConicalEffect(ctx, shader, matrix, tm, focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | virtual ~FocalOutside2PtConicalEffect() { } |
| 387 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 388 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 389 | return "Two-Point Conical Gradient Focal Outside"; |
| 390 | } |
| 391 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 392 | bool isFlipped() const { return fIsFlipped; } |
| 393 | SkScalar focal() const { return fFocalX; } |
| 394 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 395 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 396 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 397 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 398 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 399 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 400 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 401 | const FocalOutside2PtConicalEffect& s = sBase.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 402 | return (INHERITED::onIsEqual(sBase) && |
| 403 | this->fFocalX == s.fFocalX && |
| 404 | this->fIsFlipped == s.fIsFlipped); |
| 405 | } |
| 406 | |
| 407 | FocalOutside2PtConicalEffect(GrContext* ctx, |
| 408 | const SkTwoPointConicalGradient& shader, |
| 409 | const SkMatrix& matrix, |
| 410 | SkShader::TileMode tm, |
| 411 | SkScalar focalX) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 412 | : INHERITED(ctx, shader, matrix, tm) |
joshualitt | b245605 | 2015-07-08 09:36:59 -0700 | [diff] [blame] | 413 | , fFocalX(focalX) |
| 414 | , fIsFlipped(shader.isFlippedGrad()) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 415 | this->initClassID<FocalOutside2PtConicalEffect>(); |
| 416 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 417 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 418 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 419 | |
| 420 | SkScalar fFocalX; |
| 421 | bool fIsFlipped; |
| 422 | |
| 423 | typedef GrGradientEffect INHERITED; |
| 424 | }; |
| 425 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 426 | class FocalOutside2PtConicalEffect::GLSLFocalOutside2PtConicalProcessor |
| 427 | : public GrGradientEffect::GLSLProcessor { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 428 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 429 | GLSLFocalOutside2PtConicalProcessor(const GrProcessor&); |
| 430 | virtual ~GLSLFocalOutside2PtConicalProcessor() { } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 431 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 432 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 433 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 434 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 435 | |
| 436 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 437 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 438 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 439 | UniformHandle fParamUni; |
| 440 | |
| 441 | const char* fVSVaryingName; |
| 442 | const char* fFSVaryingName; |
| 443 | |
| 444 | bool fIsFlipped; |
| 445 | |
| 446 | // @{ |
| 447 | /// Values last uploaded as uniforms |
| 448 | |
| 449 | SkScalar fCachedFocal; |
| 450 | |
| 451 | // @} |
| 452 | |
| 453 | private: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 454 | typedef GrGradientEffect::GLSLProcessor INHERITED; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 455 | |
| 456 | }; |
| 457 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 458 | void FocalOutside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 459 | GrProcessorKeyBuilder* b) const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 460 | FocalOutside2PtConicalEffect::GLSLFocalOutside2PtConicalProcessor::GenKey(*this, caps, b); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 461 | } |
| 462 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 463 | GrGLSLFragmentProcessor* FocalOutside2PtConicalEffect::onCreateGLSLInstance() const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 464 | return new FocalOutside2PtConicalEffect::GLSLFocalOutside2PtConicalProcessor(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 465 | } |
| 466 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 467 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 468 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 469 | /* |
| 470 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 471 | */ |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 472 | sk_sp<GrFragmentProcessor> FocalOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 473 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 474 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 475 | SkPoint center2; |
| 476 | SkScalar radius2; |
| 477 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 478 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 479 | // Need to make sure the centers are not the same or else focal point will be inside |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 480 | } while (center1 == center2); |
| 481 | SkPoint diff = center2 - center1; |
| 482 | SkScalar diffLen = diff.length(); |
| 483 | // Below makes sure that the focal point is not contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 484 | radius2 = d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 485 | |
| 486 | SkColor colors[kMaxRandomGradientColors]; |
| 487 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 488 | SkScalar* stops = stopsArray; |
| 489 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 490 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 491 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 492 | colors, stops, colorCount, tm); |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 493 | SkMatrix viewMatrix = GrTest::TestMatrix(d->fRandom); |
| 494 | sk_sp<GrFragmentProcessor> fp = shader->asFragmentProcessor(SkShader::AsFPArgs( |
brianosman | 1638c0d | 2016-07-25 05:12:53 -0700 | [diff] [blame] | 495 | d->fContext, &viewMatrix, NULL, kNone_SkFilterQuality, nullptr, |
| 496 | SkSourceGammaTreatment::kRespect)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 497 | GrAlwaysAssert(fp); |
| 498 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 499 | } |
| 500 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 501 | FocalOutside2PtConicalEffect::GLSLFocalOutside2PtConicalProcessor |
| 502 | ::GLSLFocalOutside2PtConicalProcessor(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 503 | : fVSVaryingName(nullptr) |
| 504 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 505 | , fCachedFocal(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 506 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 507 | fIsFlipped = data.isFlipped(); |
| 508 | } |
| 509 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 510 | void FocalOutside2PtConicalEffect::GLSLFocalOutside2PtConicalProcessor::emitCode(EmitArgs& args) { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 511 | const FocalOutside2PtConicalEffect& ge = args.fFp.cast<FocalOutside2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 512 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 513 | this->emitUniforms(uniformHandler, ge); |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 514 | fParamUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
| 515 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 516 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 517 | SkString tName("t"); |
| 518 | SkString p0; // focalX |
| 519 | SkString p1; // 1 - focalX * focalX |
| 520 | |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 521 | p0.appendf("%s.x", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
| 522 | p1.appendf("%s.y", uniformHandler->getUniformVariable(fParamUni).getName().c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 523 | |
| 524 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 525 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 526 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 527 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 528 | |
| 529 | // t = p.x * focal.x +/- sqrt(p.x^2 + (1 - focal.x^2) * p.y^2) |
| 530 | |
| 531 | // output will default to transparent black (we simply won't write anything |
| 532 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 533 | fragBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 534 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 535 | fragBuilder->codeAppendf("\tfloat xs = %s.x * %s.x;\n", coords2D, coords2D); |
| 536 | fragBuilder->codeAppendf("\tfloat ys = %s.y * %s.y;\n", coords2D, coords2D); |
| 537 | fragBuilder->codeAppendf("\tfloat d = xs + %s * ys;\n", p1.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 538 | |
| 539 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 540 | // If so we must also flip sign on sqrt |
| 541 | if (!fIsFlipped) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 542 | fragBuilder->codeAppendf("\tfloat %s = %s.x * %s + sqrt(d);\n", tName.c_str(), |
| 543 | coords2D, p0.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 544 | } else { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 545 | fragBuilder->codeAppendf("\tfloat %s = %s.x * %s - sqrt(d);\n", tName.c_str(), |
| 546 | coords2D, p0.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 547 | } |
| 548 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 549 | fragBuilder->codeAppendf("\tif (%s >= 0.0 && d >= 0.0) {\n", tName.c_str()); |
| 550 | fragBuilder->codeAppend("\t\t"); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 551 | this->emitColor(fragBuilder, |
| 552 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 553 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 554 | ge, |
| 555 | tName.c_str(), |
| 556 | args.fOutputColor, |
| 557 | args.fInputColor, |
cdalton | 3f6f76f | 2016-04-11 12:18:09 -0700 | [diff] [blame] | 558 | args.fTexSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 559 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 560 | } |
| 561 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 562 | void FocalOutside2PtConicalEffect::GLSLFocalOutside2PtConicalProcessor::onSetData( |
| 563 | const GrGLSLProgramDataManager& pdman, |
| 564 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 565 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 566 | const FocalOutside2PtConicalEffect& data = processor.cast<FocalOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 567 | SkASSERT(data.isFlipped() == fIsFlipped); |
| 568 | SkScalar focal = data.focal(); |
| 569 | |
| 570 | if (fCachedFocal != focal) { |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 571 | SkScalar oneMinus2F = 1.f - SkScalarMul(focal, focal); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 572 | |
jvanverth | de11ee4 | 2016-02-26 13:58:40 -0800 | [diff] [blame] | 573 | pdman.set2f(fParamUni, SkScalarToFloat(focal), SkScalarToFloat(oneMinus2F)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 574 | fCachedFocal = focal; |
| 575 | } |
| 576 | } |
| 577 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 578 | void FocalOutside2PtConicalEffect::GLSLFocalOutside2PtConicalProcessor::GenKey( |
| 579 | const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 580 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 581 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 582 | key[0] = GenBaseGradientKey(processor); |
| 583 | key[1] = processor.cast<FocalOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 584 | } |
| 585 | |
| 586 | ////////////////////////////////////////////////////////////////////////////// |
| 587 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 588 | class FocalInside2PtConicalEffect : public GrGradientEffect { |
| 589 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 590 | class GLSLFocalInside2PtConicalProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 591 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 592 | static sk_sp<GrFragmentProcessor> Make(GrContext* ctx, |
| 593 | const SkTwoPointConicalGradient& shader, |
| 594 | const SkMatrix& matrix, |
| 595 | SkShader::TileMode tm, |
| 596 | SkScalar focalX) { |
| 597 | return sk_sp<GrFragmentProcessor>( |
| 598 | new FocalInside2PtConicalEffect(ctx, shader, matrix, tm, focalX)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 599 | } |
| 600 | |
| 601 | virtual ~FocalInside2PtConicalEffect() {} |
| 602 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 603 | const char* name() const override { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 604 | return "Two-Point Conical Gradient Focal Inside"; |
| 605 | } |
| 606 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 607 | SkScalar focal() const { return fFocalX; } |
| 608 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 609 | typedef FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor GLSLProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 610 | |
| 611 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 612 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 613 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 614 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 615 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 616 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 617 | const FocalInside2PtConicalEffect& s = sBase.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 618 | return (INHERITED::onIsEqual(sBase) && |
| 619 | this->fFocalX == s.fFocalX); |
| 620 | } |
| 621 | |
| 622 | FocalInside2PtConicalEffect(GrContext* ctx, |
| 623 | const SkTwoPointConicalGradient& shader, |
| 624 | const SkMatrix& matrix, |
| 625 | SkShader::TileMode tm, |
| 626 | SkScalar focalX) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 627 | : INHERITED(ctx, shader, matrix, tm), fFocalX(focalX) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 628 | this->initClassID<FocalInside2PtConicalEffect>(); |
| 629 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 630 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 631 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 632 | |
| 633 | SkScalar fFocalX; |
| 634 | |
| 635 | typedef GrGradientEffect INHERITED; |
| 636 | }; |
| 637 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 638 | class FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor |
| 639 | : public GrGradientEffect::GLSLProcessor { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 640 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 641 | GLSLFocalInside2PtConicalProcessor(const GrProcessor&); |
| 642 | virtual ~GLSLFocalInside2PtConicalProcessor() {} |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 643 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 644 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 645 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 646 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 647 | |
| 648 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 649 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 650 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 651 | UniformHandle fFocalUni; |
| 652 | |
| 653 | const char* fVSVaryingName; |
| 654 | const char* fFSVaryingName; |
| 655 | |
| 656 | // @{ |
| 657 | /// Values last uploaded as uniforms |
| 658 | |
| 659 | SkScalar fCachedFocal; |
| 660 | |
| 661 | // @} |
| 662 | |
| 663 | private: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 664 | typedef GrGradientEffect::GLSLProcessor INHERITED; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 665 | |
| 666 | }; |
| 667 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 668 | void FocalInside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 669 | GrProcessorKeyBuilder* b) const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 670 | FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor::GenKey(*this, caps, b); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 671 | } |
| 672 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 673 | GrGLSLFragmentProcessor* FocalInside2PtConicalEffect::onCreateGLSLInstance() const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 674 | return new FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 675 | } |
| 676 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 677 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(FocalInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 678 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 679 | /* |
| 680 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 681 | */ |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 682 | sk_sp<GrFragmentProcessor> FocalInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 683 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 684 | SkScalar radius1 = 0.f; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 685 | SkPoint center2; |
| 686 | SkScalar radius2; |
| 687 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 688 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 689 | // Below makes sure radius2 is larger enouch such that the focal point |
| 690 | // is inside the end circle |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 691 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 692 | SkPoint diff = center2 - center1; |
| 693 | SkScalar diffLen = diff.length(); |
| 694 | radius2 = diffLen + increase; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 695 | // If the circles are identical the factory will give us an empty shader. |
| 696 | } while (radius1 == radius2 && center1 == center2); |
| 697 | |
| 698 | SkColor colors[kMaxRandomGradientColors]; |
| 699 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 700 | SkScalar* stops = stopsArray; |
| 701 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 702 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 703 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 704 | colors, stops, colorCount, tm); |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 705 | SkMatrix viewMatrix = GrTest::TestMatrix(d->fRandom); |
| 706 | sk_sp<GrFragmentProcessor> fp = shader->asFragmentProcessor(SkShader::AsFPArgs( |
brianosman | 1638c0d | 2016-07-25 05:12:53 -0700 | [diff] [blame] | 707 | d->fContext, &viewMatrix, NULL, kNone_SkFilterQuality, nullptr, |
| 708 | SkSourceGammaTreatment::kRespect)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 709 | GrAlwaysAssert(fp); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 710 | return fp; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 711 | } |
| 712 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 713 | FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor |
| 714 | ::GLSLFocalInside2PtConicalProcessor(const GrProcessor&) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 715 | : fVSVaryingName(nullptr) |
| 716 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 717 | , fCachedFocal(SK_ScalarMax) {} |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 718 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 719 | void FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor::emitCode(EmitArgs& args) { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 720 | const FocalInside2PtConicalEffect& ge = args.fFp.cast<FocalInside2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 721 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 722 | this->emitUniforms(uniformHandler, ge); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 723 | fFocalUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 724 | kFloat_GrSLType, kDefault_GrSLPrecision, |
| 725 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 726 | SkString tName("t"); |
| 727 | |
| 728 | // this is the distance along x-axis from the end center to focal point in |
| 729 | // transformed coordinates |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 730 | GrGLSLShaderVar focal = uniformHandler->getUniformVariable(fFocalUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 731 | |
| 732 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 733 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 734 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 735 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 736 | |
| 737 | // t = p.x * focalX + length(p) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 738 | fragBuilder->codeAppendf("\tfloat %s = %s.x * %s + length(%s);\n", tName.c_str(), |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 739 | coords2D, focal.c_str(), coords2D); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 740 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 741 | this->emitColor(fragBuilder, |
| 742 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 743 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 744 | ge, |
| 745 | tName.c_str(), |
| 746 | args.fOutputColor, |
| 747 | args.fInputColor, |
cdalton | 3f6f76f | 2016-04-11 12:18:09 -0700 | [diff] [blame] | 748 | args.fTexSamplers); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 749 | } |
| 750 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 751 | void FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor::onSetData( |
| 752 | const GrGLSLProgramDataManager& pdman, |
| 753 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 754 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 755 | const FocalInside2PtConicalEffect& data = processor.cast<FocalInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 756 | SkScalar focal = data.focal(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 757 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 758 | if (fCachedFocal != focal) { |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 759 | pdman.set1f(fFocalUni, SkScalarToFloat(focal)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 760 | fCachedFocal = focal; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 761 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 762 | } |
| 763 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 764 | void FocalInside2PtConicalEffect::GLSLFocalInside2PtConicalProcessor::GenKey( |
| 765 | const GrProcessor& processor, |
| 766 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 767 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 768 | } |
| 769 | |
| 770 | ////////////////////////////////////////////////////////////////////////////// |
| 771 | // Circle Conical Gradients |
| 772 | ////////////////////////////////////////////////////////////////////////////// |
| 773 | |
| 774 | struct CircleConicalInfo { |
| 775 | SkPoint fCenterEnd; |
| 776 | SkScalar fA; |
| 777 | SkScalar fB; |
| 778 | SkScalar fC; |
| 779 | }; |
| 780 | |
| 781 | // Returns focal distance along x-axis in transformed coords |
| 782 | static ConicalType set_matrix_circle_conical(const SkTwoPointConicalGradient& shader, |
| 783 | SkMatrix* invLMatrix, CircleConicalInfo* info) { |
| 784 | // Inverse of the current local matrix is passed in then, |
| 785 | // translate and scale such that start circle is on the origin and has radius 1 |
| 786 | const SkPoint& centerStart = shader.getStartCenter(); |
| 787 | const SkPoint& centerEnd = shader.getEndCenter(); |
| 788 | SkScalar radiusStart = shader.getStartRadius(); |
| 789 | SkScalar radiusEnd = shader.getEndRadius(); |
| 790 | |
| 791 | SkMatrix matrix; |
| 792 | |
| 793 | matrix.setTranslate(-centerStart.fX, -centerStart.fY); |
| 794 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 795 | SkScalar invStartRad = 1.f / radiusStart; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 796 | matrix.postScale(invStartRad, invStartRad); |
| 797 | |
| 798 | radiusEnd /= radiusStart; |
| 799 | |
| 800 | SkPoint centerEndTrans; |
| 801 | matrix.mapPoints(¢erEndTrans, ¢erEnd, 1); |
| 802 | |
| 803 | SkScalar A = centerEndTrans.fX * centerEndTrans.fX + centerEndTrans.fY * centerEndTrans.fY |
| 804 | - radiusEnd * radiusEnd + 2 * radiusEnd - 1; |
| 805 | |
| 806 | // Check to see if start circle is inside end circle with edges touching. |
| 807 | // If touching we return that it is of kEdge_ConicalType, and leave the matrix setting |
egdaniel | 8405ef9 | 2014-06-09 11:57:28 -0700 | [diff] [blame] | 808 | // to the edge shader. kEdgeErrorTol = 5 * kErrorTol was picked after manual testing |
| 809 | // so that C = 1 / A is stable, and the linear approximation used in the Edge shader is |
| 810 | // still accurate. |
| 811 | if (SkScalarAbs(A) < kEdgeErrorTol) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 812 | return kEdge_ConicalType; |
| 813 | } |
| 814 | |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 815 | SkScalar C = 1.f / A; |
| 816 | SkScalar B = (radiusEnd - 1.f) * C; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 817 | |
| 818 | matrix.postScale(C, C); |
| 819 | |
| 820 | invLMatrix->postConcat(matrix); |
| 821 | |
| 822 | info->fCenterEnd = centerEndTrans; |
| 823 | info->fA = A; |
| 824 | info->fB = B; |
| 825 | info->fC = C; |
| 826 | |
| 827 | // if A ends up being negative, the start circle is contained completely inside the end cirlce |
commit-bot@chromium.org | 8089467 | 2014-04-22 21:24:22 +0000 | [diff] [blame] | 828 | if (A < 0.f) { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 829 | return kInside_ConicalType; |
| 830 | } |
| 831 | return kOutside_ConicalType; |
| 832 | } |
| 833 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 834 | class CircleInside2PtConicalEffect : public GrGradientEffect { |
| 835 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 836 | class GLSLCircleInside2PtConicalProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 837 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 838 | static sk_sp<GrFragmentProcessor> Make(GrContext* ctx, |
| 839 | const SkTwoPointConicalGradient& shader, |
| 840 | const SkMatrix& matrix, |
| 841 | SkShader::TileMode tm, |
| 842 | const CircleConicalInfo& info) { |
| 843 | return sk_sp<GrFragmentProcessor>( |
| 844 | new CircleInside2PtConicalEffect(ctx, shader, matrix, tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | virtual ~CircleInside2PtConicalEffect() {} |
| 848 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 849 | const char* name() const override { return "Two-Point Conical Gradient Inside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 850 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 851 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 852 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 853 | SkScalar A() const { return fInfo.fA; } |
| 854 | SkScalar B() const { return fInfo.fB; } |
| 855 | SkScalar C() const { return fInfo.fC; } |
| 856 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 857 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 858 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 859 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 860 | virtual void onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 861 | GrProcessorKeyBuilder* b) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 862 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 863 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 864 | const CircleInside2PtConicalEffect& s = sBase.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 865 | return (INHERITED::onIsEqual(sBase) && |
| 866 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 867 | this->fInfo.fA == s.fInfo.fA && |
| 868 | this->fInfo.fB == s.fInfo.fB && |
| 869 | this->fInfo.fC == s.fInfo.fC); |
| 870 | } |
| 871 | |
| 872 | CircleInside2PtConicalEffect(GrContext* ctx, |
| 873 | const SkTwoPointConicalGradient& shader, |
| 874 | const SkMatrix& matrix, |
| 875 | SkShader::TileMode tm, |
| 876 | const CircleConicalInfo& info) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 877 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 878 | this->initClassID<CircleInside2PtConicalEffect>(); |
| 879 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 880 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 881 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 882 | |
| 883 | const CircleConicalInfo fInfo; |
| 884 | |
| 885 | typedef GrGradientEffect INHERITED; |
| 886 | }; |
| 887 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 888 | class CircleInside2PtConicalEffect::GLSLCircleInside2PtConicalProcessor |
| 889 | : public GrGradientEffect::GLSLProcessor { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 890 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 891 | GLSLCircleInside2PtConicalProcessor(const GrProcessor&); |
| 892 | virtual ~GLSLCircleInside2PtConicalProcessor() {} |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 893 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 894 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 895 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 896 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 897 | |
| 898 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 899 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 900 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 901 | UniformHandle fCenterUni; |
| 902 | UniformHandle fParamUni; |
| 903 | |
| 904 | const char* fVSVaryingName; |
| 905 | const char* fFSVaryingName; |
| 906 | |
| 907 | // @{ |
| 908 | /// Values last uploaded as uniforms |
| 909 | |
| 910 | SkScalar fCachedCenterX; |
| 911 | SkScalar fCachedCenterY; |
| 912 | SkScalar fCachedA; |
| 913 | SkScalar fCachedB; |
| 914 | SkScalar fCachedC; |
| 915 | |
| 916 | // @} |
| 917 | |
| 918 | private: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 919 | typedef GrGradientEffect::GLSLProcessor INHERITED; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 920 | |
| 921 | }; |
| 922 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 923 | void CircleInside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 924 | GrProcessorKeyBuilder* b) const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 925 | CircleInside2PtConicalEffect::GLSLCircleInside2PtConicalProcessor::GenKey(*this, caps, b); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 926 | } |
| 927 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 928 | GrGLSLFragmentProcessor* CircleInside2PtConicalEffect::onCreateGLSLInstance() const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 929 | return new CircleInside2PtConicalEffect::GLSLCircleInside2PtConicalProcessor(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 930 | } |
| 931 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 932 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleInside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 933 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 934 | /* |
| 935 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 936 | */ |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 937 | sk_sp<GrFragmentProcessor> CircleInside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 938 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 939 | SkScalar radius1 = d->fRandom->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 940 | SkPoint center2; |
| 941 | SkScalar radius2; |
| 942 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 943 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 944 | // Below makes sure that circle one is contained within circle two |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 945 | SkScalar increase = d->fRandom->nextUScalar1(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 946 | SkPoint diff = center2 - center1; |
| 947 | SkScalar diffLen = diff.length(); |
| 948 | radius2 = radius1 + diffLen + increase; |
| 949 | // If the circles are identical the factory will give us an empty shader. |
| 950 | } while (radius1 == radius2 && center1 == center2); |
| 951 | |
| 952 | SkColor colors[kMaxRandomGradientColors]; |
| 953 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 954 | SkScalar* stops = stopsArray; |
| 955 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 956 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 957 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 958 | colors, stops, colorCount, tm); |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 959 | SkMatrix viewMatrix = GrTest::TestMatrix(d->fRandom); |
| 960 | sk_sp<GrFragmentProcessor> fp = shader->asFragmentProcessor(SkShader::AsFPArgs( |
brianosman | 1638c0d | 2016-07-25 05:12:53 -0700 | [diff] [blame] | 961 | d->fContext, &viewMatrix, NULL, kNone_SkFilterQuality, nullptr, |
| 962 | SkSourceGammaTreatment::kRespect)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 963 | GrAlwaysAssert(fp); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 964 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 965 | } |
| 966 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 967 | CircleInside2PtConicalEffect::GLSLCircleInside2PtConicalProcessor |
| 968 | ::GLSLCircleInside2PtConicalProcessor(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 969 | : fVSVaryingName(nullptr) |
| 970 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 971 | , fCachedCenterX(SK_ScalarMax) |
| 972 | , fCachedCenterY(SK_ScalarMax) |
| 973 | , fCachedA(SK_ScalarMax) |
| 974 | , fCachedB(SK_ScalarMax) |
| 975 | , fCachedC(SK_ScalarMax) {} |
| 976 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 977 | void CircleInside2PtConicalEffect::GLSLCircleInside2PtConicalProcessor::emitCode(EmitArgs& args) { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 978 | const CircleInside2PtConicalEffect& ge = args.fFp.cast<CircleInside2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 979 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 980 | this->emitUniforms(uniformHandler, ge); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 981 | fCenterUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 982 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 983 | "Conical2FSCenter"); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 984 | fParamUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 985 | kVec3f_GrSLType, kDefault_GrSLPrecision, |
| 986 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 987 | SkString tName("t"); |
| 988 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 989 | GrGLSLShaderVar center = uniformHandler->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 990 | // params.x = A |
| 991 | // params.y = B |
| 992 | // params.z = C |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 993 | GrGLSLShaderVar params = uniformHandler->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 994 | |
| 995 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 996 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 997 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 998 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 999 | |
| 1000 | // p = coords2D |
| 1001 | // e = center end |
| 1002 | // r = radius end |
| 1003 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1004 | // B = (r -1) / A |
| 1005 | // C = 1 / A |
| 1006 | // d = dot(e, p) + B |
| 1007 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1008 | fragBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
| 1009 | fragBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1010 | params.c_str()); |
| 1011 | fragBuilder->codeAppendf("\tfloat %s = d + sqrt(d * d - %s.x * pDotp + %s.z);\n", |
| 1012 | tName.c_str(), params.c_str(), params.c_str()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1013 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1014 | this->emitColor(fragBuilder, |
| 1015 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 1016 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1017 | ge, |
| 1018 | tName.c_str(), |
| 1019 | args.fOutputColor, |
| 1020 | args.fInputColor, |
cdalton | 3f6f76f | 2016-04-11 12:18:09 -0700 | [diff] [blame] | 1021 | args.fTexSamplers); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1022 | } |
| 1023 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1024 | void CircleInside2PtConicalEffect::GLSLCircleInside2PtConicalProcessor::onSetData( |
| 1025 | const GrGLSLProgramDataManager& pdman, |
| 1026 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1027 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1028 | const CircleInside2PtConicalEffect& data = processor.cast<CircleInside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1029 | SkScalar centerX = data.centerX(); |
| 1030 | SkScalar centerY = data.centerY(); |
| 1031 | SkScalar A = data.A(); |
| 1032 | SkScalar B = data.B(); |
| 1033 | SkScalar C = data.C(); |
| 1034 | |
| 1035 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1036 | fCachedA != A || fCachedB != B || fCachedC != C) { |
| 1037 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1038 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1039 | pdman.set3f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1040 | |
| 1041 | fCachedCenterX = centerX; |
| 1042 | fCachedCenterY = centerY; |
| 1043 | fCachedA = A; |
| 1044 | fCachedB = B; |
| 1045 | fCachedC = C; |
| 1046 | } |
| 1047 | } |
| 1048 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1049 | void CircleInside2PtConicalEffect::GLSLCircleInside2PtConicalProcessor::GenKey( |
| 1050 | const GrProcessor& processor, |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1051 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1052 | b->add32(GenBaseGradientKey(processor)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | ////////////////////////////////////////////////////////////////////////////// |
| 1056 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1057 | class CircleOutside2PtConicalEffect : public GrGradientEffect { |
| 1058 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1059 | class GLSLCircleOutside2PtConicalProcessor; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1060 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1061 | static sk_sp<GrFragmentProcessor> Make(GrContext* ctx, |
| 1062 | const SkTwoPointConicalGradient& shader, |
| 1063 | const SkMatrix& matrix, |
| 1064 | SkShader::TileMode tm, |
| 1065 | const CircleConicalInfo& info) { |
| 1066 | return sk_sp<GrFragmentProcessor>( |
| 1067 | new CircleOutside2PtConicalEffect(ctx, shader, matrix, tm, info)); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1068 | } |
| 1069 | |
| 1070 | virtual ~CircleOutside2PtConicalEffect() {} |
| 1071 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1072 | const char* name() const override { return "Two-Point Conical Gradient Outside"; } |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1073 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1074 | SkScalar centerX() const { return fInfo.fCenterEnd.fX; } |
| 1075 | SkScalar centerY() const { return fInfo.fCenterEnd.fY; } |
| 1076 | SkScalar A() const { return fInfo.fA; } |
| 1077 | SkScalar B() const { return fInfo.fB; } |
| 1078 | SkScalar C() const { return fInfo.fC; } |
| 1079 | SkScalar tLimit() const { return fTLimit; } |
| 1080 | bool isFlipped() const { return fIsFlipped; } |
| 1081 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1082 | private: |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1083 | GrGLSLFragmentProcessor* onCreateGLSLInstance() const override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1084 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1085 | void onGetGLSLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override; |
wangyix | 4b3050b | 2015-08-04 07:59:37 -0700 | [diff] [blame] | 1086 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 1087 | bool onIsEqual(const GrFragmentProcessor& sBase) const override { |
joshualitt | 49586be | 2014-09-16 08:21:41 -0700 | [diff] [blame] | 1088 | const CircleOutside2PtConicalEffect& s = sBase.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1089 | return (INHERITED::onIsEqual(sBase) && |
| 1090 | this->fInfo.fCenterEnd == s.fInfo.fCenterEnd && |
| 1091 | this->fInfo.fA == s.fInfo.fA && |
| 1092 | this->fInfo.fB == s.fInfo.fB && |
| 1093 | this->fInfo.fC == s.fInfo.fC && |
| 1094 | this->fTLimit == s.fTLimit && |
| 1095 | this->fIsFlipped == s.fIsFlipped); |
| 1096 | } |
| 1097 | |
| 1098 | CircleOutside2PtConicalEffect(GrContext* ctx, |
| 1099 | const SkTwoPointConicalGradient& shader, |
| 1100 | const SkMatrix& matrix, |
| 1101 | SkShader::TileMode tm, |
| 1102 | const CircleConicalInfo& info) |
bsalomon | 4a33952 | 2015-10-06 08:40:50 -0700 | [diff] [blame] | 1103 | : INHERITED(ctx, shader, matrix, tm), fInfo(info) { |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1104 | this->initClassID<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1105 | if (shader.getStartRadius() != shader.getEndRadius()) { |
reed | 80ea19c | 2015-05-12 10:37:34 -0700 | [diff] [blame] | 1106 | fTLimit = shader.getStartRadius() / (shader.getStartRadius() - shader.getEndRadius()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1107 | } else { |
| 1108 | fTLimit = SK_ScalarMin; |
| 1109 | } |
| 1110 | |
| 1111 | fIsFlipped = shader.isFlippedGrad(); |
| 1112 | } |
| 1113 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1114 | GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1115 | |
| 1116 | const CircleConicalInfo fInfo; |
| 1117 | SkScalar fTLimit; |
| 1118 | bool fIsFlipped; |
| 1119 | |
| 1120 | typedef GrGradientEffect INHERITED; |
| 1121 | }; |
| 1122 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1123 | class CircleOutside2PtConicalEffect::GLSLCircleOutside2PtConicalProcessor |
| 1124 | : public GrGradientEffect::GLSLProcessor { |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1125 | public: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1126 | GLSLCircleOutside2PtConicalProcessor(const GrProcessor&); |
| 1127 | virtual ~GLSLCircleOutside2PtConicalProcessor() {} |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1128 | |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1129 | virtual void emitCode(EmitArgs&) override; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1130 | |
jvanverth | cfc1886 | 2015-04-28 08:48:20 -0700 | [diff] [blame] | 1131 | static void GenKey(const GrProcessor&, const GrGLSLCaps& caps, GrProcessorKeyBuilder* b); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1132 | |
| 1133 | protected: |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1134 | void onSetData(const GrGLSLProgramDataManager&, const GrProcessor&) override; |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1135 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1136 | UniformHandle fCenterUni; |
| 1137 | UniformHandle fParamUni; |
| 1138 | |
| 1139 | const char* fVSVaryingName; |
| 1140 | const char* fFSVaryingName; |
| 1141 | |
| 1142 | bool fIsFlipped; |
| 1143 | |
| 1144 | // @{ |
| 1145 | /// Values last uploaded as uniforms |
| 1146 | |
| 1147 | SkScalar fCachedCenterX; |
| 1148 | SkScalar fCachedCenterY; |
| 1149 | SkScalar fCachedA; |
| 1150 | SkScalar fCachedB; |
| 1151 | SkScalar fCachedC; |
| 1152 | SkScalar fCachedTLimit; |
| 1153 | |
| 1154 | // @} |
| 1155 | |
| 1156 | private: |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1157 | typedef GrGradientEffect::GLSLProcessor INHERITED; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1158 | |
| 1159 | }; |
| 1160 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1161 | void CircleOutside2PtConicalEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps, |
| 1162 | GrProcessorKeyBuilder* b) const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1163 | CircleOutside2PtConicalEffect::GLSLCircleOutside2PtConicalProcessor::GenKey(*this, caps, b); |
joshualitt | eb2a676 | 2014-12-04 11:35:33 -0800 | [diff] [blame] | 1164 | } |
| 1165 | |
egdaniel | 57d3b03 | 2015-11-13 11:57:27 -0800 | [diff] [blame] | 1166 | GrGLSLFragmentProcessor* CircleOutside2PtConicalEffect::onCreateGLSLInstance() const { |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1167 | return new CircleOutside2PtConicalEffect::GLSLCircleOutside2PtConicalProcessor(*this); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1168 | } |
| 1169 | |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1170 | GR_DEFINE_FRAGMENT_PROCESSOR_TEST(CircleOutside2PtConicalEffect); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1171 | |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1172 | /* |
| 1173 | * All Two point conical gradient test create functions may occasionally create edge case shaders |
| 1174 | */ |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1175 | sk_sp<GrFragmentProcessor> CircleOutside2PtConicalEffect::TestCreate(GrProcessorTestData* d) { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1176 | SkPoint center1 = {d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()}; |
| 1177 | SkScalar radius1 = d->fRandom->nextUScalar1() + 0.0001f; // make sure radius1 != 0 |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1178 | SkPoint center2; |
| 1179 | SkScalar radius2; |
| 1180 | SkScalar diffLen; |
| 1181 | do { |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1182 | center2.set(d->fRandom->nextUScalar1(), d->fRandom->nextUScalar1()); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1183 | // If the circles share a center than we can't be in the outside case |
| 1184 | } while (center1 == center2); |
joshualitt | 0125847 | 2014-09-22 10:29:30 -0700 | [diff] [blame] | 1185 | SkPoint diff = center2 - center1; |
| 1186 | diffLen = diff.length(); |
| 1187 | // Below makes sure that circle one is not contained within circle two |
| 1188 | // and have radius2 >= radius to match sorting on cpu side |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1189 | radius2 = radius1 + d->fRandom->nextRangeF(0.f, diffLen); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1190 | |
| 1191 | SkColor colors[kMaxRandomGradientColors]; |
| 1192 | SkScalar stopsArray[kMaxRandomGradientColors]; |
| 1193 | SkScalar* stops = stopsArray; |
| 1194 | SkShader::TileMode tm; |
joshualitt | 0067ff5 | 2015-07-08 14:26:19 -0700 | [diff] [blame] | 1195 | int colorCount = RandomGradientParams(d->fRandom, colors, &stops, &tm); |
reed | 8a21c9f | 2016-03-08 18:50:00 -0800 | [diff] [blame] | 1196 | auto shader = SkGradientShader::MakeTwoPointConical(center1, radius1, center2, radius2, |
| 1197 | colors, stops, colorCount, tm); |
brianosman | 839345d | 2016-07-22 11:04:53 -0700 | [diff] [blame] | 1198 | SkMatrix viewMatrix = GrTest::TestMatrix(d->fRandom); |
| 1199 | sk_sp<GrFragmentProcessor> fp = shader->asFragmentProcessor(SkShader::AsFPArgs( |
brianosman | 1638c0d | 2016-07-25 05:12:53 -0700 | [diff] [blame] | 1200 | d->fContext, &viewMatrix, NULL, kNone_SkFilterQuality, nullptr, |
| 1201 | SkSourceGammaTreatment::kRespect)); |
bsalomon | c21b09e | 2015-08-28 18:46:56 -0700 | [diff] [blame] | 1202 | GrAlwaysAssert(fp); |
joshualitt | 8ca93e7 | 2015-07-08 06:51:43 -0700 | [diff] [blame] | 1203 | return fp; |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1204 | } |
| 1205 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1206 | CircleOutside2PtConicalEffect::GLSLCircleOutside2PtConicalProcessor |
| 1207 | ::GLSLCircleOutside2PtConicalProcessor(const GrProcessor& processor) |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1208 | : fVSVaryingName(nullptr) |
| 1209 | , fFSVaryingName(nullptr) |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1210 | , fCachedCenterX(SK_ScalarMax) |
| 1211 | , fCachedCenterY(SK_ScalarMax) |
| 1212 | , fCachedA(SK_ScalarMax) |
| 1213 | , fCachedB(SK_ScalarMax) |
| 1214 | , fCachedC(SK_ScalarMax) |
| 1215 | , fCachedTLimit(SK_ScalarMax) { |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1216 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1217 | fIsFlipped = data.isFlipped(); |
| 1218 | } |
| 1219 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1220 | void CircleOutside2PtConicalEffect::GLSLCircleOutside2PtConicalProcessor::emitCode(EmitArgs& args) { |
wangyix | 7c157a9 | 2015-07-22 15:08:53 -0700 | [diff] [blame] | 1221 | const CircleOutside2PtConicalEffect& ge = args.fFp.cast<CircleOutside2PtConicalEffect>(); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1222 | GrGLSLUniformHandler* uniformHandler = args.fUniformHandler; |
| 1223 | this->emitUniforms(uniformHandler, ge); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 1224 | fCenterUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1225 | kVec2f_GrSLType, kDefault_GrSLPrecision, |
| 1226 | "Conical2FSCenter"); |
cdalton | 5e58cee | 2016-02-11 12:49:47 -0800 | [diff] [blame] | 1227 | fParamUni = uniformHandler->addUniform(kFragment_GrShaderFlag, |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1228 | kVec4f_GrSLType, kDefault_GrSLPrecision, |
| 1229 | "Conical2FSParams"); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1230 | SkString tName("t"); |
| 1231 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1232 | GrGLSLShaderVar center = uniformHandler->getUniformVariable(fCenterUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1233 | // params.x = A |
| 1234 | // params.y = B |
| 1235 | // params.z = C |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1236 | GrGLSLShaderVar params = uniformHandler->getUniformVariable(fParamUni); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1237 | |
| 1238 | // if we have a vec3 from being in perspective, convert it to a vec2 first |
cdalton | 8528541 | 2016-02-18 12:37:07 -0800 | [diff] [blame] | 1239 | GrGLSLFPFragmentBuilder* fragBuilder = args.fFragBuilder; |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1240 | SkString coords2DString = fragBuilder->ensureFSCoords2D(args.fCoords, 0); |
skia.committer@gmail.com | ede0c5c | 2014-04-23 03:04:11 +0000 | [diff] [blame] | 1241 | const char* coords2D = coords2DString.c_str(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1242 | |
| 1243 | // output will default to transparent black (we simply won't write anything |
| 1244 | // else to it if invalid, instead of discarding or returning prematurely) |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1245 | fragBuilder->codeAppendf("\t%s = vec4(0.0,0.0,0.0,0.0);\n", args.fOutputColor); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1246 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1247 | // p = coords2D |
| 1248 | // e = center end |
| 1249 | // r = radius end |
| 1250 | // A = dot(e, e) - r^2 + 2 * r - 1 |
| 1251 | // B = (r -1) / A |
| 1252 | // C = 1 / A |
| 1253 | // d = dot(e, p) + B |
| 1254 | // t = d +/- sqrt(d^2 - A * dot(p, p) + C) |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1255 | |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1256 | fragBuilder->codeAppendf("\tfloat pDotp = dot(%s, %s);\n", coords2D, coords2D); |
| 1257 | fragBuilder->codeAppendf("\tfloat d = dot(%s, %s) + %s.y;\n", coords2D, center.c_str(), |
| 1258 | params.c_str()); |
| 1259 | fragBuilder->codeAppendf("\tfloat deter = d * d - %s.x * pDotp + %s.z;\n", params.c_str(), |
| 1260 | params.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1261 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1262 | // Must check to see if we flipped the circle order (to make sure start radius < end radius) |
| 1263 | // If so we must also flip sign on sqrt |
| 1264 | if (!fIsFlipped) { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1265 | fragBuilder->codeAppendf("\tfloat %s = d + sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1266 | } else { |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1267 | fragBuilder->codeAppendf("\tfloat %s = d - sqrt(deter);\n", tName.c_str()); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1268 | } |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1269 | |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1270 | fragBuilder->codeAppendf("\tif (%s >= %s.w && deter >= 0.0) {\n", |
| 1271 | tName.c_str(), params.c_str()); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1272 | fragBuilder->codeAppend("\t\t"); |
egdaniel | 7ea439b | 2015-12-03 09:20:44 -0800 | [diff] [blame] | 1273 | this->emitColor(fragBuilder, |
| 1274 | uniformHandler, |
egdaniel | a2e3e0f | 2015-11-19 07:23:45 -0800 | [diff] [blame] | 1275 | args.fGLSLCaps, |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1276 | ge, |
| 1277 | tName.c_str(), |
| 1278 | args.fOutputColor, |
| 1279 | args.fInputColor, |
cdalton | 3f6f76f | 2016-04-11 12:18:09 -0700 | [diff] [blame] | 1280 | args.fTexSamplers); |
egdaniel | 4ca2e60 | 2015-11-18 08:01:26 -0800 | [diff] [blame] | 1281 | fragBuilder->codeAppend("\t}\n"); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1282 | } |
| 1283 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1284 | void CircleOutside2PtConicalEffect::GLSLCircleOutside2PtConicalProcessor::onSetData( |
| 1285 | const GrGLSLProgramDataManager& pdman, |
egdaniel | 018fb62 | 2015-10-28 07:26:40 -0700 | [diff] [blame] | 1286 | const GrProcessor& processor) { |
wangyix | b1daa86 | 2015-08-18 11:29:31 -0700 | [diff] [blame] | 1287 | INHERITED::onSetData(pdman, processor); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1288 | const CircleOutside2PtConicalEffect& data = processor.cast<CircleOutside2PtConicalEffect>(); |
commit-bot@chromium.org | 44d83c1 | 2014-04-21 13:10:25 +0000 | [diff] [blame] | 1289 | SkASSERT(data.isFlipped() == fIsFlipped); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1290 | SkScalar centerX = data.centerX(); |
| 1291 | SkScalar centerY = data.centerY(); |
| 1292 | SkScalar A = data.A(); |
| 1293 | SkScalar B = data.B(); |
| 1294 | SkScalar C = data.C(); |
| 1295 | SkScalar tLimit = data.tLimit(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1296 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1297 | if (fCachedCenterX != centerX || fCachedCenterY != centerY || |
| 1298 | fCachedA != A || fCachedB != B || fCachedC != C || fCachedTLimit != tLimit) { |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1299 | |
kkinnunen | 7510b22 | 2014-07-30 00:04:16 -0700 | [diff] [blame] | 1300 | pdman.set2f(fCenterUni, SkScalarToFloat(centerX), SkScalarToFloat(centerY)); |
| 1301 | pdman.set4f(fParamUni, SkScalarToFloat(A), SkScalarToFloat(B), SkScalarToFloat(C), |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1302 | SkScalarToFloat(tLimit)); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1303 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1304 | fCachedCenterX = centerX; |
| 1305 | fCachedCenterY = centerY; |
| 1306 | fCachedA = A; |
| 1307 | fCachedB = B; |
| 1308 | fCachedC = C; |
| 1309 | fCachedTLimit = tLimit; |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1310 | } |
| 1311 | } |
| 1312 | |
fmenozzi | 55d318d | 2016-08-09 08:05:57 -0700 | [diff] [blame^] | 1313 | void CircleOutside2PtConicalEffect::GLSLCircleOutside2PtConicalProcessor::GenKey( |
| 1314 | const GrProcessor& processor, |
| 1315 | const GrGLSLCaps&, GrProcessorKeyBuilder* b) { |
bsalomon | 63e99f7 | 2014-07-21 08:03:14 -0700 | [diff] [blame] | 1316 | uint32_t* key = b->add32n(2); |
joshualitt | b0a8a37 | 2014-09-23 09:50:21 -0700 | [diff] [blame] | 1317 | key[0] = GenBaseGradientKey(processor); |
| 1318 | key[1] = processor.cast<CircleOutside2PtConicalEffect>().isFlipped(); |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1319 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1320 | |
| 1321 | ////////////////////////////////////////////////////////////////////////////// |
| 1322 | |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1323 | sk_sp<GrFragmentProcessor> Gr2PtConicalGradientEffect::Make(GrContext* ctx, |
| 1324 | const SkTwoPointConicalGradient& shader, |
| 1325 | SkShader::TileMode tm, |
| 1326 | const SkMatrix* localMatrix) { |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1327 | SkMatrix matrix; |
| 1328 | if (!shader.getLocalMatrix().invert(&matrix)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1329 | return nullptr; |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1330 | } |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1331 | if (localMatrix) { |
| 1332 | SkMatrix inv; |
| 1333 | if (!localMatrix->invert(&inv)) { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 1334 | return nullptr; |
commit-bot@chromium.org | 96fb748 | 2014-05-09 20:28:11 +0000 | [diff] [blame] | 1335 | } |
| 1336 | matrix.postConcat(inv); |
| 1337 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1338 | |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1339 | if (shader.getStartRadius() < kErrorTol) { |
| 1340 | SkScalar focalX; |
| 1341 | ConicalType type = set_matrix_focal_conical(shader, &matrix, &focalX); |
| 1342 | if (type == kInside_ConicalType) { |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1343 | return FocalInside2PtConicalEffect::Make(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1344 | } else if(type == kEdge_ConicalType) { |
| 1345 | set_matrix_edge_conical(shader, &matrix); |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1346 | return Edge2PtConicalEffect::Make(ctx, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1347 | } else { |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1348 | return FocalOutside2PtConicalEffect::Make(ctx, shader, matrix, tm, focalX); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1349 | } |
| 1350 | } |
| 1351 | |
| 1352 | CircleConicalInfo info; |
| 1353 | ConicalType type = set_matrix_circle_conical(shader, &matrix, &info); |
| 1354 | |
| 1355 | if (type == kInside_ConicalType) { |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1356 | return CircleInside2PtConicalEffect::Make(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1357 | } else if (type == kEdge_ConicalType) { |
| 1358 | set_matrix_edge_conical(shader, &matrix); |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1359 | return Edge2PtConicalEffect::Make(ctx, shader, matrix, tm); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1360 | } else { |
bungeman | 06ca8ec | 2016-06-09 08:01:03 -0700 | [diff] [blame] | 1361 | return CircleOutside2PtConicalEffect::Make(ctx, shader, matrix, tm, info); |
commit-bot@chromium.org | c8379d7 | 2014-04-22 20:56:37 +0000 | [diff] [blame] | 1362 | } |
commit-bot@chromium.org | 2af1a2d | 2014-04-04 13:50:50 +0000 | [diff] [blame] | 1363 | } |
| 1364 | |
commit-bot@chromium.org | aa64fbf | 2014-04-03 14:59:19 +0000 | [diff] [blame] | 1365 | #endif |